TZV GREDELJ D.O.O. ni mtoa ya bidhaa na huduma kama vile locomotive kujenga na reconditioning huduma,huduma za matengenezo, mwanga reli motor trekta,injini, dizeli umeme,injini, dizeli majimaji,injini, dizeli-mitambo,injini, dizeli, flameproof,injini, umeme,injini, umeme, betri,injini, umeme, betri flameproof,injini, mvuke, kikapu hiki,injini, mvuke, kioevu mafuta,injini, mvuke, imara mafuta,injini, gesi turbine,injini, kiwango kupima,injini, rack reli,injini, nyembamba kupima (mwanga reli),railbuses,treni kwa ajili ya huduma ya mji,trainsets, chini ya ardhi reli,trainsets, overground reli,trainsets / nyingi kitengo railcars, umeme,trainsets / nyingi kitengo railcars, dizeli mitambo,treni, wafanyakazi kufanya, kwa ajili ya migodi,injini, shunting, byte,injini, abiria,injini, mizigo,injini, mchanganyiko trafiki,injini, madini,injini, miniature,trolleys, reli motor genge,reli magari, ukaguzi trolleys,rolling hisa jumaamosi,reli ya hisa na vifaa vya,railcars, dizeli-umeme,railcars, dizeli-mitambo,railcars, umeme,trams,railcars, dizeli-majimaji.